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he said either bad gas or do a compression test
and its none of those than possibly weak coil

Your tuner mentioned a bad tank of gas and compression test, so just base on that I'm guessing your ecu/car is not happy. I would venture on to say without getting to technical that your car is knocking enough to where your IAM/timing is dropping and you're tuner is trying to figure out the problem so he suggested a few things that maybe the culprit at hand so he can tune your car for power. I'm leaning towards a bad tank of gas because compression is not low and cylinder leakage test is somewhat decent for a cold motor.

I'm not looking for someone to pin point my problem. More looking for advise or if anyone has had this problem and can lead me in a direction to not loose more money. It may just be bad gas which I hope and I hope I get good gas for next time

08 wrx 67k miles
Perrin intake
Turbo xs bov
Borla muffler
Catless pipe
And I'm not sure if the car has other things on it.